CA1293206C - Integrated disc brake and drum brake construction - Google Patents
Integrated disc brake and drum brake constructionInfo
- Publication number
- CA1293206C CA1293206C CA000545370A CA545370A CA1293206C CA 1293206 C CA1293206 C CA 1293206C CA 000545370 A CA000545370 A CA 000545370A CA 545370 A CA545370 A CA 545370A CA 1293206 C CA1293206 C CA 1293206C
- Authority
- CA
- Canada
- Prior art keywords
- support member
- brake
- piston
- disc brake
- yoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
- F16D51/48—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action with two linked or directly-interacting brake shoes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2262—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by open sliding surfaces, e.g. grooves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
- F16D63/004—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00 comprising a rotor engaged both axially and radially by braking members, e.g. combined drum and disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
- F16D65/09—Pivots or supporting members therefor
- F16D65/091—Pivots or supporting members therefor for axially holding the segments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0972—Resilient means interposed between pads and supporting members or other brake parts transmitting brake reaction force, e.g. elements interposed between torque support plate and pad
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
- F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
- F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
- F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
- F16D65/0977—Springs made from sheet metal
- F16D65/0978—Springs made from sheet metal acting on one pad only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
- F16D2055/0025—Brake calipers comprising a flat frame member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/14—Mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
INTEGRATED DISC BRAKE AND DRUM BRAKE CONSTRUCTION
ABSTRACT OF THE DISCLOSURE
The present invention comprises an integrated disc brake (50) and drum brake (120) construction. A
support member (12) is supported by a vehicle axle (14) and extends radially outwardly to provide support for a housing (52) of the disc brake (50). The housing (52) is secured by bolts (93 or 94) to the support member (12), the housing (52) having through openings (54) for receiv-ing rod members (75). The rod members (75) each have one end (76) secured to the support member (12) and a second part (90) and the other end has an opening (77) for an internal bore (78) extending therein. The disc brake (50) includes an axially movable yoke (60) attached to guide pins (82) extending into bores (78) of the rods (75) for slidable movement therein. The second part (90) extends radially to provide support for an inner brake pad (20) and may extend axially away from the housing (52) to provide an anchor support (91) for shoulders (132, 142) of drum brake shoes (130, 140). The support member (12) supports a mechanical actuator (121) which may be operated to bias the drum brake shoes (130, 140) into engagement with a drum portion (42) of the brake disc (40) in order to effect a parking brake operation.
ABSTRACT OF THE DISCLOSURE
The present invention comprises an integrated disc brake (50) and drum brake (120) construction. A
support member (12) is supported by a vehicle axle (14) and extends radially outwardly to provide support for a housing (52) of the disc brake (50). The housing (52) is secured by bolts (93 or 94) to the support member (12), the housing (52) having through openings (54) for receiv-ing rod members (75). The rod members (75) each have one end (76) secured to the support member (12) and a second part (90) and the other end has an opening (77) for an internal bore (78) extending therein. The disc brake (50) includes an axially movable yoke (60) attached to guide pins (82) extending into bores (78) of the rods (75) for slidable movement therein. The second part (90) extends radially to provide support for an inner brake pad (20) and may extend axially away from the housing (52) to provide an anchor support (91) for shoulders (132, 142) of drum brake shoes (130, 140). The support member (12) supports a mechanical actuator (121) which may be operated to bias the drum brake shoes (130, 140) into engagement with a drum portion (42) of the brake disc (40) in order to effect a parking brake operation.
Description
~3~
INTEGRATED DISC ~RAKE AND DRUM ~RAKE CONSTRUCTION
' The invention relates generally to an integrated disc brake and drum brake construction, and particularly to a disc brake having a modular wheel cylinder.
When different braking forces are desired for different models of vehicles, prior art disc brakes require either a new wheel cylinder in order to effect higher or lower braking pressures needed for braking or a new disc brake be tooled in order to provide the dif-ferent braking pressures. It i5 highly desirable to provide a disc brake which requires only minimal modifi-cation in order to effect different braking characteris-tics for respective different models of vehicles. Addi-tionally, it is desirable that the disc brake be non-handed, i.e., neither left-handed nor right-handed in design so that the disc brake can be mounted on either side of the car by simply moving the disc brake laterally and attaching one of opposing portions of the disc brake to the associated support member. The support member should have a standard diameter readily accepted by several models of vehicles, while the exact shape of the support member may be altered by simply changing inserts in progressive dies utilized in stamping the support member, all without affecting the maximum diameter of the support member. Thus, it would be possible to provide a 2S drum brake on several different models o vehicles while , having maximum flexibility in the design of the support member of the drum brake construction. It would also be highly advantageous to integrate the support member of the disc brake with the support member or backing plate of the drum brake construction, in order to eliminate unnecessary parts and manufacturing steps and to signifi-cantly reduce the cost of an integrated disc brake and drum brake construction. The drum brake would be uti-lized for a parking brake application.
The present invent;on provides solutions to the above problems by providing a support member which is , ~
3;~6 : supported by a vehicle axle and comprises both the back-ing plate for a drum brake utilized for a parking brake application and the support member for a disc brake which effects braking of the vehicle. The disc brake comprises a torque support member having receiving means, a piston : : housing having piston means disposed in a housing bore ~;~ and the piston housing fixed to said support member, a yoke engaging on one side said piston means and on the other side a first brake pad, rod means accepted in said receiving means and having an internal bore, the rod means e~tending within an opening in said piston housing, and pin means attached at one end to said yoke and at the other end extending for slidable movement within said internal bore, the rod means permitting slidable movement : lS of said yoke and pin means.
One way of carrying out the invention is des-cribed in detail below with reference to the drawings which illustrate an embodiment, in which:
Figure 1 is an inboard side view of the inte-grated disc brake and drum brake construction of thepresent invention;
Figure 2 is a section view taken along view line : 2-2 of Figure l;
Figure 3 is a top view of the construction illus-25 trated in Figure l;
!j Figure 4 is a top view of the anchor plate of the present invention;
` : Figure 5 is taken along view line 5-5 of Figure : 30 Figure 6 is a segmented view of the outer disc brak~ pad;
Figure 7 is a segmented view of the inner disc brake pad;
Figure 8 is taken along view line 8-8 of Figure 1;
Figure 9 is taken along view line 9-9 of Figure l; .
1 ~2~3;~:06 _ 3 _ Figure 10 is an isometric view of an alternative embodirnent of a support member utilized for a disc brake, Figure 11 is an isometric view of the disc brake support member and yoke, and Figure 12 is an isometric view of the disc brak.e support member with steering arms and ball joint supports.
The integrated disc brake and drum brake con-struction of the present invention is designated gener-ally by reference numeral 10. Referring to Figures 1 and 2, the construction 10 includ~s a support member 12 sup-ported by a vehicle a~le 14 and extending radially out-wardly to radially outer portion 16. Support member 12 comprises a backing plate or a drum brake and also a support member for a disc brake. Radially outer portion 16 includes a pair of openings 18 and 20 (see Fi~ure 5).
The disc brake is designated gener~lly by reference numeral ~0 and includes a piston housing 52 having a pair of through-openings 54 and opposed pairs of openings 56 and 57. Disc brake 50 includes a yoke 60 (see Figure 3) which includes an inboard portion 62 and an outboard - portion 64 connected by circumferential side ~oStions 63. The piston housing 52 includes central bore ~ff hous-ing a pair of opposed pistons 58, 59. Piston 58 engages an inner ~riction or disc brake pad 70 while piston 59 engages yoke inboard portion 62. The yoke 60 includes circumferentially extending portions 65 which extend inwardly to be spaced-apart from one another, and form a portion of the perimeter of a central opening 67. Each circumferentially exten~ing portion 65 provides support for a bolt 68 which secures a yoke plate 69 to yoke 60.
Yoke plate 69 e~tends radially inwardly and has a pair of openings 66 (Figure 5) each of which receive the head of a bolt 80. Rods 75 have at one end flanged portions 76 , I which secure together support member second part 90 and support member 12. Each rod 75 is received within an aligned through opening 54 and the other end of each rod member has an opening 79 for an internal bore 78. Bolts 80 secure slidable guide pins 82 to the yoke plate 69, ~LZ93Z~
the slidable pins extending within the lnternal bores 78. Disposed about each slidable guide pin 82 is a sleeve member 83. Bolts 93 are received threadably within open-ings 57 of piston housing 52 in order to secure the pis-ton housing to the support member 12 and second part 90.
Bolt openings 56 receive threaded bolts 94 which secure holder plate 98 to piston housing 52. Holder plate 98 provides securement for an end of the flexible boot 100 ~; which has the boot end trapped between the hclder plate .: 10 and a flange of sleeve 83. Thus, support plate 12 and second part 90 are secured together by both the threaded bolts 93 and rods 75, rods 75 each e~tending within an associated through opening in the piston housing and slidably receiving the associated guide pins 82 which support yo)ce 60 o~ disc brake 50.
Hydraulic fluid pressure received from a master cylinder (not shown) ~ s communi.cated via an inlet 102 .~ ~n (Figure 2) to bore ~ and displaces pistons 58, 59 axi-; ~ ally away from one another, piston 58 biasing inner fric-tion pad 70 directly into enyagement with disc 90 and piston 59 displacing inboard yoke portion 62 to bring outboard riction or brake pad 72 into engagement with ` the oppos;te face of disc 40. Air bleed for the hydrau-.~ lic system is provided by a bleed fitting 101. The yoke60 is slidably supported by means of the bolts 80, guide pins 82, and sleeves 83 received within the internal bores 78 of rods 75 secured to support mem~er 12 and ~; second part 90. Figure 6 illustrates the radial and circumferential positioning of outer friction pad 72.
Yoke 60 e~tends circumferentially into a pair of opposed : support projections 110 which are received within slots . 115 of friction pad 72. Slots 115 include anti-rattle springs 116. As shown by Figures 4 and 7, second part 90 : !l extends radially outwardly into circumferentially opposed portions 95 which provide anchoring abutments for inner ; brake pad 70. Brake pad 70 includes abutments 71 which engage radially abutments 95, and the pad is held radi-ally in place by spring members 77.
:~LZ93;~06 Referring to Figure 4, second part 90 when ~ie~ed from above may include an axial extension 91 which extends within the drum brake 120 (see Figure 2). Drum brake 120 includes a mechanical actuator 121 comprising a lever arm 122, pivot point 123, and engagement plate 124 (see Figure 9). Lever 122 abuts drum brake shoe 130 and abut-ment plate 124 abuts drum brake shoe 140. Brake shoe 130 includes a shoulder 132 and brake shoe 140 includes a shoulder 142 (see Figure 1) each positioned adjacent the axial extension 91 of second part 90 which forms an anchor support plate for drum brake shoes 130 and 140. Drum brake shoes 130 and 140 biased together by spring 135 are sup-ported by means of the slot openings 134, 144 and pin members 160 which extend through axial openings in the shoa webs (see Figure 8). Figure 8 illustrates pin mem-bers 160 which are biased by springs 162 mounted in con-tact with the bralce shoe webs. The opposite ends of brake shoes 130 and 140 include an adjustable strut mechanism 170 comprising a spring 171, nut 172, screw 174, and star wheel 176 engaged by the spring 171. Ths adjustable strut mechanism is conventional and operates in a manner well known to those versed in the art, and will not be explained further. Disc 40 includes an axial or drum portion 42 (Figure 2) which is circular a~d provides a rotating drum for drum brake 120. The drum brake pads 130 and 140 are positioned adjacent drum 42 for engage-ment therewith when biased radially outwardly by the actuator 121. The actuator lever 122 is connected to a hand brake cable (not shown).
As described above, brake fluid pressure re-ceived through inlet 102 biases pistons ~8, 59 a~ially outwardly to bias brake pads 70 and 72 into braking engayement with opposite faces of disc 40. The yoke 60 is a~ially displaceable relative to piston housing 52 oy means of guide pins 82 slidably received within rods 75 which are secured to support member 12 and second part ! go the piston housing also being secured to support member 12 and second part 90 by bolts 93. If it is ''' ~33~:()6 .~
desired to effect a different braking force for a dif-ferent vehicle, rather than providing an entirely new disc brake structure, the piston housing of the present invention may simply have a different size bore e~truded therein so that a different size piston may be utilized and different braking characteristics achieved. Also, the disc brake of the present invention is non-handed, i.e., neither right-handed nor left-handed. Referring to Figure 5, if the brake is to be mounted adjacent the opposite wheel of the axle, the housing 52 is mounted to support member 12 and second part 90 (which are reversed) via the bolts 94 and openings 56, while rods 75 would be in reversed positions relative to that shown in Figure 5 but still secured to member 12 and second part 90 and providing slidable support for p;ns 82.
The present invention provides a disc brake that is integrated with a drum brake by means of a stamped support member which carries an interchangeable disc brake housing and pistons, the support member including an integrated second part which may provide an anchor support for the drum brake shoes. The drum brake con-struction 120 is utilized for a parking brake applica-tion. When the actuator 121 is operated by the vehicle operator pulling the parking brake lever, the parking brake cable is retracted which causes lever 122 to pivot and bias drum brake shoe 130 radially outwardly and, by reaction, drum brake shoe 140 radially outwardly into engagement with the drum 42. It has been found that ssveral models of vehicles will accept the same size diameter drum brake, and therefore the present invention can be utilized for several different models with only minor changes made in the configuration of support member 12 according to the particular vehicle model. The changes in support member 12 can be accomplished merely by chang-ing the inserts in progressive dies utilized to stamp out ! the support member, thereby changing its configurationbut still retaining the overall common drum brake dia-meter size applicable to several ~ehicles. If the disc ' ! -brake construction of the present invention is desired for use on a front wheel of a vehicle, the axial e~ten sion 91 of second part 90 may be eliminated because a drum brake is normally not utilized on front wheels of the vehicle. Thus, the support member and disc brake construction can be utilized in the absence of the drum brake construction. The integrated disc brake and drum brake construction provides an easily manufacturable and low cost construction which includes considerable strsngth inheren~ in the construction. The housing 52 is secured by means of the bolts 93 or 94, and the rods 75 provide further positioning of the housing relative to support member 12 and second part 90 so that, when viewing Figure 1, there are four points which provide a combination of support and positioning for disc brake 50.
Figures 10-12 illustrate a further embodiment of the support member 12. In Figure 10, support member 212 comprises an integral cast member which includes a piston housing 252, opposed portions 295, internal bores 278, central bore 255 and structural elements 299. The disc brake construction 210 is illustrated in Figure 11 and includes a yoke 60 having circumferentially extending portions 65, a central opening 67, inboard and outboard portions 62, 64, circumferential side portions 63, yoke plate 69 attached by bolts 68 to circumferentially extend-ing portions 65, and bolts 80 which secure the plate 69 to guide pins received slidably in internal bores 278.
The yoke 60 is the same yoke described above for disc brake and drum brake construction 10, except that the guide pins are received slidably within internal bores 278 without the utilization of sleeve members disposed about the guide pins. Also, internal bores 278 are dis-posed within housing 252 rather than within rods that extend through the housing. Disc brake construction 210 is a non-handed construction which may be utilized on either side of the vehicle, and provides an integral, cast construction member that comprises the support mem-ber, housing, and opposed portions 295 which provide 32~
anchoring abutments for the inner brake pad. The advan-! tage of disc brake construction 210 is that several parts are combined into one integral cast member which permits the elimination of parts such as the rods and sleeves utilized previously to secure together the support member and support and to receive the guide pins. Figure 12 illustrates support member 212 with the addition of inte-gral steering arms 280 and ball joint supports 290.
Various modifications of the above-described embodiment of the invention will be apparent to those skilled in the art. It is to be understood that such modifications can be made without departing ~rom the scope of the invention.
'i ,
INTEGRATED DISC ~RAKE AND DRUM ~RAKE CONSTRUCTION
' The invention relates generally to an integrated disc brake and drum brake construction, and particularly to a disc brake having a modular wheel cylinder.
When different braking forces are desired for different models of vehicles, prior art disc brakes require either a new wheel cylinder in order to effect higher or lower braking pressures needed for braking or a new disc brake be tooled in order to provide the dif-ferent braking pressures. It i5 highly desirable to provide a disc brake which requires only minimal modifi-cation in order to effect different braking characteris-tics for respective different models of vehicles. Addi-tionally, it is desirable that the disc brake be non-handed, i.e., neither left-handed nor right-handed in design so that the disc brake can be mounted on either side of the car by simply moving the disc brake laterally and attaching one of opposing portions of the disc brake to the associated support member. The support member should have a standard diameter readily accepted by several models of vehicles, while the exact shape of the support member may be altered by simply changing inserts in progressive dies utilized in stamping the support member, all without affecting the maximum diameter of the support member. Thus, it would be possible to provide a 2S drum brake on several different models o vehicles while , having maximum flexibility in the design of the support member of the drum brake construction. It would also be highly advantageous to integrate the support member of the disc brake with the support member or backing plate of the drum brake construction, in order to eliminate unnecessary parts and manufacturing steps and to signifi-cantly reduce the cost of an integrated disc brake and drum brake construction. The drum brake would be uti-lized for a parking brake application.
The present invent;on provides solutions to the above problems by providing a support member which is , ~
3;~6 : supported by a vehicle axle and comprises both the back-ing plate for a drum brake utilized for a parking brake application and the support member for a disc brake which effects braking of the vehicle. The disc brake comprises a torque support member having receiving means, a piston : : housing having piston means disposed in a housing bore ~;~ and the piston housing fixed to said support member, a yoke engaging on one side said piston means and on the other side a first brake pad, rod means accepted in said receiving means and having an internal bore, the rod means e~tending within an opening in said piston housing, and pin means attached at one end to said yoke and at the other end extending for slidable movement within said internal bore, the rod means permitting slidable movement : lS of said yoke and pin means.
One way of carrying out the invention is des-cribed in detail below with reference to the drawings which illustrate an embodiment, in which:
Figure 1 is an inboard side view of the inte-grated disc brake and drum brake construction of thepresent invention;
Figure 2 is a section view taken along view line : 2-2 of Figure l;
Figure 3 is a top view of the construction illus-25 trated in Figure l;
!j Figure 4 is a top view of the anchor plate of the present invention;
` : Figure 5 is taken along view line 5-5 of Figure : 30 Figure 6 is a segmented view of the outer disc brak~ pad;
Figure 7 is a segmented view of the inner disc brake pad;
Figure 8 is taken along view line 8-8 of Figure 1;
Figure 9 is taken along view line 9-9 of Figure l; .
1 ~2~3;~:06 _ 3 _ Figure 10 is an isometric view of an alternative embodirnent of a support member utilized for a disc brake, Figure 11 is an isometric view of the disc brake support member and yoke, and Figure 12 is an isometric view of the disc brak.e support member with steering arms and ball joint supports.
The integrated disc brake and drum brake con-struction of the present invention is designated gener-ally by reference numeral 10. Referring to Figures 1 and 2, the construction 10 includ~s a support member 12 sup-ported by a vehicle a~le 14 and extending radially out-wardly to radially outer portion 16. Support member 12 comprises a backing plate or a drum brake and also a support member for a disc brake. Radially outer portion 16 includes a pair of openings 18 and 20 (see Fi~ure 5).
The disc brake is designated gener~lly by reference numeral ~0 and includes a piston housing 52 having a pair of through-openings 54 and opposed pairs of openings 56 and 57. Disc brake 50 includes a yoke 60 (see Figure 3) which includes an inboard portion 62 and an outboard - portion 64 connected by circumferential side ~oStions 63. The piston housing 52 includes central bore ~ff hous-ing a pair of opposed pistons 58, 59. Piston 58 engages an inner ~riction or disc brake pad 70 while piston 59 engages yoke inboard portion 62. The yoke 60 includes circumferentially extending portions 65 which extend inwardly to be spaced-apart from one another, and form a portion of the perimeter of a central opening 67. Each circumferentially exten~ing portion 65 provides support for a bolt 68 which secures a yoke plate 69 to yoke 60.
Yoke plate 69 e~tends radially inwardly and has a pair of openings 66 (Figure 5) each of which receive the head of a bolt 80. Rods 75 have at one end flanged portions 76 , I which secure together support member second part 90 and support member 12. Each rod 75 is received within an aligned through opening 54 and the other end of each rod member has an opening 79 for an internal bore 78. Bolts 80 secure slidable guide pins 82 to the yoke plate 69, ~LZ93Z~
the slidable pins extending within the lnternal bores 78. Disposed about each slidable guide pin 82 is a sleeve member 83. Bolts 93 are received threadably within open-ings 57 of piston housing 52 in order to secure the pis-ton housing to the support member 12 and second part 90.
Bolt openings 56 receive threaded bolts 94 which secure holder plate 98 to piston housing 52. Holder plate 98 provides securement for an end of the flexible boot 100 ~; which has the boot end trapped between the hclder plate .: 10 and a flange of sleeve 83. Thus, support plate 12 and second part 90 are secured together by both the threaded bolts 93 and rods 75, rods 75 each e~tending within an associated through opening in the piston housing and slidably receiving the associated guide pins 82 which support yo)ce 60 o~ disc brake 50.
Hydraulic fluid pressure received from a master cylinder (not shown) ~ s communi.cated via an inlet 102 .~ ~n (Figure 2) to bore ~ and displaces pistons 58, 59 axi-; ~ ally away from one another, piston 58 biasing inner fric-tion pad 70 directly into enyagement with disc 90 and piston 59 displacing inboard yoke portion 62 to bring outboard riction or brake pad 72 into engagement with ` the oppos;te face of disc 40. Air bleed for the hydrau-.~ lic system is provided by a bleed fitting 101. The yoke60 is slidably supported by means of the bolts 80, guide pins 82, and sleeves 83 received within the internal bores 78 of rods 75 secured to support mem~er 12 and ~; second part 90. Figure 6 illustrates the radial and circumferential positioning of outer friction pad 72.
Yoke 60 e~tends circumferentially into a pair of opposed : support projections 110 which are received within slots . 115 of friction pad 72. Slots 115 include anti-rattle springs 116. As shown by Figures 4 and 7, second part 90 : !l extends radially outwardly into circumferentially opposed portions 95 which provide anchoring abutments for inner ; brake pad 70. Brake pad 70 includes abutments 71 which engage radially abutments 95, and the pad is held radi-ally in place by spring members 77.
:~LZ93;~06 Referring to Figure 4, second part 90 when ~ie~ed from above may include an axial extension 91 which extends within the drum brake 120 (see Figure 2). Drum brake 120 includes a mechanical actuator 121 comprising a lever arm 122, pivot point 123, and engagement plate 124 (see Figure 9). Lever 122 abuts drum brake shoe 130 and abut-ment plate 124 abuts drum brake shoe 140. Brake shoe 130 includes a shoulder 132 and brake shoe 140 includes a shoulder 142 (see Figure 1) each positioned adjacent the axial extension 91 of second part 90 which forms an anchor support plate for drum brake shoes 130 and 140. Drum brake shoes 130 and 140 biased together by spring 135 are sup-ported by means of the slot openings 134, 144 and pin members 160 which extend through axial openings in the shoa webs (see Figure 8). Figure 8 illustrates pin mem-bers 160 which are biased by springs 162 mounted in con-tact with the bralce shoe webs. The opposite ends of brake shoes 130 and 140 include an adjustable strut mechanism 170 comprising a spring 171, nut 172, screw 174, and star wheel 176 engaged by the spring 171. Ths adjustable strut mechanism is conventional and operates in a manner well known to those versed in the art, and will not be explained further. Disc 40 includes an axial or drum portion 42 (Figure 2) which is circular a~d provides a rotating drum for drum brake 120. The drum brake pads 130 and 140 are positioned adjacent drum 42 for engage-ment therewith when biased radially outwardly by the actuator 121. The actuator lever 122 is connected to a hand brake cable (not shown).
As described above, brake fluid pressure re-ceived through inlet 102 biases pistons ~8, 59 a~ially outwardly to bias brake pads 70 and 72 into braking engayement with opposite faces of disc 40. The yoke 60 is a~ially displaceable relative to piston housing 52 oy means of guide pins 82 slidably received within rods 75 which are secured to support member 12 and second part ! go the piston housing also being secured to support member 12 and second part 90 by bolts 93. If it is ''' ~33~:()6 .~
desired to effect a different braking force for a dif-ferent vehicle, rather than providing an entirely new disc brake structure, the piston housing of the present invention may simply have a different size bore e~truded therein so that a different size piston may be utilized and different braking characteristics achieved. Also, the disc brake of the present invention is non-handed, i.e., neither right-handed nor left-handed. Referring to Figure 5, if the brake is to be mounted adjacent the opposite wheel of the axle, the housing 52 is mounted to support member 12 and second part 90 (which are reversed) via the bolts 94 and openings 56, while rods 75 would be in reversed positions relative to that shown in Figure 5 but still secured to member 12 and second part 90 and providing slidable support for p;ns 82.
The present invention provides a disc brake that is integrated with a drum brake by means of a stamped support member which carries an interchangeable disc brake housing and pistons, the support member including an integrated second part which may provide an anchor support for the drum brake shoes. The drum brake con-struction 120 is utilized for a parking brake applica-tion. When the actuator 121 is operated by the vehicle operator pulling the parking brake lever, the parking brake cable is retracted which causes lever 122 to pivot and bias drum brake shoe 130 radially outwardly and, by reaction, drum brake shoe 140 radially outwardly into engagement with the drum 42. It has been found that ssveral models of vehicles will accept the same size diameter drum brake, and therefore the present invention can be utilized for several different models with only minor changes made in the configuration of support member 12 according to the particular vehicle model. The changes in support member 12 can be accomplished merely by chang-ing the inserts in progressive dies utilized to stamp out ! the support member, thereby changing its configurationbut still retaining the overall common drum brake dia-meter size applicable to several ~ehicles. If the disc ' ! -brake construction of the present invention is desired for use on a front wheel of a vehicle, the axial e~ten sion 91 of second part 90 may be eliminated because a drum brake is normally not utilized on front wheels of the vehicle. Thus, the support member and disc brake construction can be utilized in the absence of the drum brake construction. The integrated disc brake and drum brake construction provides an easily manufacturable and low cost construction which includes considerable strsngth inheren~ in the construction. The housing 52 is secured by means of the bolts 93 or 94, and the rods 75 provide further positioning of the housing relative to support member 12 and second part 90 so that, when viewing Figure 1, there are four points which provide a combination of support and positioning for disc brake 50.
Figures 10-12 illustrate a further embodiment of the support member 12. In Figure 10, support member 212 comprises an integral cast member which includes a piston housing 252, opposed portions 295, internal bores 278, central bore 255 and structural elements 299. The disc brake construction 210 is illustrated in Figure 11 and includes a yoke 60 having circumferentially extending portions 65, a central opening 67, inboard and outboard portions 62, 64, circumferential side portions 63, yoke plate 69 attached by bolts 68 to circumferentially extend-ing portions 65, and bolts 80 which secure the plate 69 to guide pins received slidably in internal bores 278.
The yoke 60 is the same yoke described above for disc brake and drum brake construction 10, except that the guide pins are received slidably within internal bores 278 without the utilization of sleeve members disposed about the guide pins. Also, internal bores 278 are dis-posed within housing 252 rather than within rods that extend through the housing. Disc brake construction 210 is a non-handed construction which may be utilized on either side of the vehicle, and provides an integral, cast construction member that comprises the support mem-ber, housing, and opposed portions 295 which provide 32~
anchoring abutments for the inner brake pad. The advan-! tage of disc brake construction 210 is that several parts are combined into one integral cast member which permits the elimination of parts such as the rods and sleeves utilized previously to secure together the support member and support and to receive the guide pins. Figure 12 illustrates support member 212 with the addition of inte-gral steering arms 280 and ball joint supports 290.
Various modifications of the above-described embodiment of the invention will be apparent to those skilled in the art. It is to be understood that such modifications can be made without departing ~rom the scope of the invention.
'i ,
Claims (23)
1. A disc brake, comprising a torque support member having receiving means, a piston housing having piston means disposed in a housing bore and the piston housing fixed to said support member, a yoke engaging on one side said piston means and on the other side a first brake pad, characterized in that the brake comprises rod means accepted in said receiving means and having an internal bore, the rod means extending within an opening in said piston housing, pin means attached at one end to said yoke and at the other end extending for slidable movement within said internal bore, the rod means permitting slidable movement of the yoke and pin means, the opening in said piston housing extending therethrough and the piston housing abutting a radial surface of said support member, the rod means including an enlarged head for securing said rod means to said support member, the pin means including thereabout a sleeve member received between the pin means and adjacent surface of the internal bore of the rod means, and the piston housing including aligned openings on opposite sides thereof, one aligned opening receiving a bolt which secures said piston housing to the support member and the other aligned opening receiving means for securing a plate member to the housing.
2. The disc brake in accordance with claim 1, wherein the plate member secured to the piston housing provides retaining means for a flexible boot member extending between said rod means and said pin means.
3. The disc brake in accordance with claim 2, wherein the yoke includes a pair of oppositely disposed and circum-ferentially extending portions spaced-apart from one another at a radially outermost location of said disc brake, the circumferentially extending portions each including means for attaching to the yoke a yoke plate which extends radially inwardly to an attachment with the pin means.
4. The disc brake in accordance with claim 3, wherein the support member comprises a two-piece support member secured together by said rod means.
5. The disc brake in accordance with claim 4, wherein a second part of the support member extends radially outwardly into a central opening of said yoke.
6. The disc brake in accordance with claim 4, wherein a second part of the support member extends into a central opening of the yoke and provides radial and circumferential support for a second brake pad.
7. The disc brake in accordance with claim 6, wherein the second brake pad has a pair of oppositely disposed abutments received by corresponding portions of said second part, the second brake pad being maintained in engagement with the portions by means of a spring member at each portion.
8. The disc brake in accordance with claim 7, wherein the yoke comprises inboard and outboard portions, the outboard portion containing a connecting section having opposed end portions providing support for said first brake pad.
9. The disc brake in accordance with claim 4, wherein a second part of the support member extends axially to provide an anchor plate for brake shoes of a drum brake.
10. The disc brake in accordance with claim 9, wherein the support member provides support for actuator means of said drum brake, the actuator means operable to effect separation of said brake shoes.
11. A disc brake, comprising a torque support member having receiving means, a piston housing having piston means disposed in a housing bore and the piston housing fixed to said support member, a yoke engaging on one side said piston means and on the other side a first brake pad, characterized in that the brake comprises rod means accepted in said receiving means and having an internal bore, the rod means extending within an opening in said piston housing, pin means attached at one end to said yoke and at the other end extending for slidable movement within said internal bore, the rod means permitting slidable movement of the yoke and pin means, the opening in said piston housing extending therethrough and the piston housing abutting a surface of said support member, the rod means secured to said support member, the pin means including thereabout a sleeve member received between the pin means and adjacent surface of the internal bore of the rod means, and the piston housing including aligned openings on opposite sides thereof, one aligned opening receiving means for securing said piston housing to the support member and the other aligned opening receiving means for securing flexible seal retaining means to the housing.
12. A support member connected with a vehicular axle and providing support for a disc brake, said support member extending radially outwardly and having openings therein, the disc brake having a piston housing fixed to said support member by securement means extending through associated openings in said support member, characterized in that the piston housing has at least one through opening receiving therein rod means, the rod means secured at one end to said support member and the other end having a bore extending therein, the disc brake comprising an axially movable yoke member having pin means affixed thereto and extending into said bore for slidable movement relative to said rod means, the support member including a second part, the openings in the support member including respective aligned openings in said second part and receiving therein the securement means, the second part fixed securely to the support member by means of the rod means and securement means, and the second part of the support member extending axially to provide an anchor support for brake shoes of a drum brake disposed about said axle, the brake shoes positioned for engagement with an axially extending circular portion of a disc of said disc brake.
13. The support member in accordance with claim 12, wherein the support member provides support and positioning for an actuator mechanism which is operable to displace said brake shoes radially outwardly into engagement with the axial portion of the disc.
14. The support member in accordance with claim 13, wherein the support member includes apertures which receive respective pin members connected with webs of respective drum brake shoes.
15. The support member in accordance with claim 14, wherein said drum brake shoes are secured together at one end by means of an adjustable strut means.
16. A disc brake, comprising a torque support member having receiving means, a piston housing having piston means disposed in a housing bore and the piston housing fixed to said support member, a yoke engaging on one side said piston means and on the other side a first brake pad, characterized in that the brake comprises rod means accepted by said receiving means and having an internal bore, the rod means connected with an anchor support which extends axially to provide anchoring support for brake shoes of a drum brake, the brake shoes positioned for engagement with an axially extending circular portion of a disc of said disc brake, and load bearing pin means attached at one end to said yoke and at the other end extending for slidable movement within said internal bore, the rod means permitting slidable movement of said yoke and pin means, and the pin means transmitting braking torque to the rod means and support member.
17. The disc brake in accordance with claim 16, wherein the opening in said piston housing extends therethrough and the piston housing abuts a radial surface of said support member.
18. The disc brake in accordance with claim 17, wherein the rod means includes means for securing said rod means to said support member.
19. The disc brake in accordance with claim 18, wherein the pin means includes thereabout a sleeve member received between the pin means and adjacent surface of the internal bore or the rod means.
20. The support member in accordance with claim 16, wherein the piston means comprises a pair of pistons, one piston engaging an inboard friction pad and the other piston engaging the yoke across the entire diameter of the other piston.
21. A support member connected with a vehicular axle and providing support for a disc brake, said support member extending radially outwardly and having openings therein, the disc brake having a piston housing fixed against axial and radial movement to said support member by securement means extending through associated openings in said support member, characterized in that the piston housing has at least one through opening receiving therein rod means, the rod means secured at one end to said support member and the other end having a bore extending therein, and the disc brake comprising an axially movable yoke member having load bearing pin means affixed thereto and extending into said bore for slidable movement relative to said rod means, braking torque being transmitted through the pin means to the rod means, housing, and support member.
22. The support member in accordance with claim 21, wherein the support member includes a second part, the openings in the support member including respective aligned openings in the second part and receiving therein the securement means, and the second part fixedly secured to the support member by means of the rod means and securement means.
23. The support member in accordance with claim 21, wherein the piston means comprises a pair of pistons, one piston engaging an inboard friction pad and the other piston engaging the yoke across the entire diameter of the other piston.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91183686A | 1986-09-26 | 1986-09-26 | |
| US911,836 | 1986-09-26 | ||
| US07/073,923 US4784241A (en) | 1986-09-26 | 1987-07-15 | Integrated disc brake and drum rake construction |
| US073,923 | 1993-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1293206C true CA1293206C (en) | 1991-12-17 |
Family
ID=26755042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000545370A Expired - Lifetime CA1293206C (en) | 1986-09-26 | 1987-08-26 | Integrated disc brake and drum brake construction |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4784241A (en) |
| CA (1) | CA1293206C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385216A (en) * | 1993-06-04 | 1995-01-31 | The Budd Company | Composite rear brake disc and drum |
| DE4418955B4 (en) * | 1994-05-31 | 2004-01-29 | Bayerische Motoren Werke Ag | Fixed caliper partial brake disc brake for motor vehicles |
| US5590742A (en) * | 1995-06-07 | 1997-01-07 | Itt Automotive, Inc. | Stamped caliper adapter |
| JP2002021892A (en) * | 2000-07-04 | 2002-01-23 | Akebono Brake Ind Co Ltd | Drum-in-disc brake device |
| JP4384996B2 (en) * | 2004-09-30 | 2009-12-16 | 本田技研工業株式会社 | Brake device for vehicle |
| JP4977141B2 (en) * | 2005-10-05 | 2012-07-18 | フレニ・ブレンボ エス・ピー・エー | Disc brake system for vehicles combining foot brake and parking brake |
| ITMI20120232A1 (en) | 2012-02-16 | 2013-08-17 | Freni Brembo Spa | ASSEMBLY OF SERVICE CLAMP AND STATION |
| US9308895B2 (en) * | 2013-04-24 | 2016-04-12 | Saf-Holland, Inc. | Axle hub assembly |
| CN109236897A (en) * | 2018-10-23 | 2019-01-18 | 福州大学 | Disk drum one-piece brakes and its working method |
| CN112065891B (en) * | 2020-09-25 | 2022-04-01 | 湖北联统机械有限公司 | Brake caliper |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3443669A (en) * | 1968-01-08 | 1969-05-13 | Dan W Jeffries | Compensating disk brake with active and passive caliper configuration having inboard caliper retriever and independent torque resolving members |
| US3557912A (en) * | 1969-02-03 | 1971-01-26 | Chrysler Corp | Duo-servo drum brake and mechanical actuating means therefor |
| JPS4821031B1 (en) * | 1970-11-07 | 1973-06-26 | ||
| US3773149A (en) * | 1971-05-10 | 1973-11-20 | Nissan Motor | Automotive disc brake |
| FR2142248A5 (en) * | 1971-06-18 | 1973-01-26 | Dba | |
| JPS5316463B2 (en) * | 1973-02-16 | 1978-06-01 | ||
| JPS51133A (en) * | 1974-06-18 | 1976-01-05 | Fudo Construction Co | SHUNSET SUKOHO |
| US4261443A (en) * | 1974-11-05 | 1981-04-14 | Girling Limited | Disc brakes for vehicles |
| US4109766A (en) * | 1976-07-06 | 1978-08-29 | Akebono Brake Industry Co., Ltd. | Disc brake |
| JPS53143866A (en) * | 1977-05-20 | 1978-12-14 | Tokico Ltd | Disc brake |
| GB2093934B (en) * | 1981-03-03 | 1985-01-30 | Lucas Industries Ltd | Improvements relating to the construction of pin sliding calipers |
-
1987
- 1987-07-15 US US07/073,923 patent/US4784241A/en not_active Expired - Fee Related
- 1987-08-26 CA CA000545370A patent/CA1293206C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4784241A (en) | 1988-11-15 |
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| Date | Code | Title | Description |
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| MKLA | Lapsed |